Traditional Green Roofs Improve Air Quality

Reduces urban heat island effect and improves air quality.

Traditional green roofs improve air quality. Because green roofs protect the roof membrane from harsh weather and ultraviolet uv radiation they can last twice as long traditional roofs. A green roof or rooftop garden is a vegetative layer grown on a rooftop. Green roofs provide shade remove heat from the air and reduce temperatures of the roof surface and surrounding air. Of roofs with grass extensive green roofs is an effective alternative for significantly reducing the impact of urban air pollution.

A 10 20 per cent increase in green roof area would make a substantial contribution to improving air quality in cities. Therefore green roofs contribute to the reduction of a number of polluting air particles and compounds not only through the plants themselves but also by deposition in the growing medium itself. The temperature in cities is often higher than surrounding rural areas a phenomenon known as the urban heat island effect large amounts of paved surfaces in cities absorb solar radiation and re radiate it as heat which increases the local air temperature. Researchers suggest policy planners could use green roofs in conjunction with existing.

Extensive planting within cities is now widely recognised as a means of improving air quality. Information on the benefits of green roofs. Green roofs roofs that are planted with vegetation may improve the indoor air quality of commercial buildings by cutting the amount of ozone coming into the buildings from the outside.